/*******************************************************************************
 * Copyright 2017 Bstek
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License.  You may obtain a copy
 * of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
 * License for the specific language governing permissions and limitations under
 * the License.
 ******************************************************************************/
package com.bstek.urule.runtime.agenda;

import com.bstek.urule.action.ActionValue;
import com.bstek.urule.model.rule.RuleInfo;
import com.bstek.urule.runtime.rete.Context;

import java.util.ArrayList;
import java.util.List;

/**
 * @author Jacky.gao
 * @since 2015年1月2日
 */
public class ActivationGroup extends RuleGroup {
    private boolean executed;

    public ActivationGroup(String name, List<RuleInfo> executedRules) {
        super(name, executedRules);
    }

    @Override
    public List<RuleInfo> execute(Context context, AgendaFilter filter, int max, List<ActionValue> actionValues) {
        executed = true;
        Activation activation = fetchNextExecutableActivation(activations);
        if (activation == null) {
            return null;
        }
        activations.clear();
        if (filter == null || filter.accept(activation)) {
            RuleInfo ruleInfo = activation.execute(context, executedRules, actionValues);
            List<RuleInfo> ruleInfos = new ArrayList<RuleInfo>();
            ruleInfos.add(ruleInfo);
            return ruleInfos;
        }
        return null;
    }

    public boolean isExecuted() {
        return executed;
    }
}
